Cool first half of MarchFebruary 25th, 2013 at 9:47 pm by Bill Steffen under Bill's Blog, Weather
Last year on March 11, the high temperature in G.R. was 65 degrees. Five of the first 12 days of March 2012 were in the 60s. This is the GFS model from the 18Z run for March 11 (2013). Click on the picture to enlarge. Now, keep in mind it’s the GFS and…it’s 336 hours out…and…it’s 99% likely that it’s overdone….but…WOW, that is one blast of Arctic air plowing down thru the Great Lakes. However, with March starting with a negative North Atlantic Oscillation, a very negative Arctic Oscillation and a positive Pacific North American Pattern…it’s a no-brainer that the first 3 1/2 weeks of March 2013 won’t be anywhere near as warm as the first 3 1/2 weeks of March 2012. The average high temperature for March 1 is 38, for March 11 it’s 42 and by March 28, the average high is 50.